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To: ahhaha who wrote (271)	3/4/1999 2:13:00 AM
From: Carl Hindman	Respond to of 626

Not all that difficult if the device is small. NBS (Now NIST) in the 60's made gas turbines for high efficiency cooling & liquefaction of H2 and He which spun at > 1,000,000 rpm, using gas bearings. Control of wobble mode instabilities was the key there. Very high rpm (lapped titanium) spherical gyros are also rather old tech, and were magnetically suspended, but these have long since been supersede by the ring laser systems. Fiberglass flywheels spinning at 50,000-150,000 rpm are being considered for spacecraft power supplies (vs. batteries) and electric cars and actually can be weight/cost/performance efficient against good battery technology in some situations. I don't have a copy of the SR patent, but from the title it seemed to cover basically the DFB stabilized laser. From your remarks it seems you think it tells more ... does it provide any relevant information concerning the optical modulation and signal processing, because that's what has had everyone stumped.